陶瓷止回閥又稱陶瓷單向閥或陶瓷逆止閥,是一種依靠介質(zhì)本身流動而自動開、閉閥瓣的閥門,主要用于防止介質(zhì)倒流、防止泵及驅(qū)動電動機反轉(zhuǎn),以及容器介質(zhì)的泄放,只允許介質(zhì)向一個方向流動,以防止發(fā)生事故。
采購信息
? ? ? ? ?提供陶瓷止回閥價格報價、型號廠家、產(chǎn)品高清圖片、生產(chǎn)廠家、供應商、經(jīng)銷商、制造商信息,以及在線洽談機會。
結(jié)構(gòu)特點
- 采用結(jié)構(gòu)陶瓷做密封副,閥門與介質(zhì)接觸部分材質(zhì)均采用結(jié)構(gòu)陶瓷材料,避免與介質(zhì)直接接觸而產(chǎn)生腐蝕的可能
- 結(jié)構(gòu)陶瓷化學性能穩(wěn)定,硬度高,可耐絕大部分酸堿介質(zhì)腐蝕,具有優(yōu)良的耐腐蝕、耐高溫、耐磨損及耐沖蝕性能
- 按結(jié)構(gòu)劃分,可分為升降式止回閥(立式和直通式兩種)、旋啟式止回閥(單瓣式、雙瓣式和多瓣式三種)和蝶式止回閥(碟式雙瓣、碟式單瓣)
工作原理
- 屬于自動閥類,其閥瓣在流體壓力作用下開啟,流體從進口側(cè)流向出口側(cè)。介質(zhì)倒流時靠閥瓣的自重或輔助機構(gòu)自動關閉,以防止介質(zhì)倒流保護設備的正常運行
- 一般應當水平安裝,但耐磨陶瓷止回閥可在管道中任意角度安裝
性能優(yōu)勢
- 使用壽命長:是普通金屬止回閥壽命的十倍左右,也是鈦合金閥和蒙乃爾閥的2~4倍
- 具有耐磨損、耐腐蝕、耐沖蝕性能且隔熱性好,可用于高硬度的顆粒介質(zhì)和各種復雜工況
- 可替代整臺使用貴重金屬制造的止回閥,具有超高的性價比優(yōu)勢
應用范圍
- 主要針對火力發(fā)電廠灰渣排放系統(tǒng)設計,適用于軟漿體和硬漿體介質(zhì)中使用
- 一般適用于含有固體顆粒的磨損性和沖刷性比較強的介質(zhì),如電廠干灰系統(tǒng)倉泵的進出料門、礦山、化工等各類有磨損的干灰、水渣等介質(zhì)管道
- 也可用于水、油、汽等介質(zhì)單向流動的管線中
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標準編號 |
標準中文名稱 |
標準英文名稱 |
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SY/T5215-87 |
鉆具止回閥 |
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GB/T12235-1989 |
通用閥門法蘭連接鋼制截止閥和升降式止回閥 |
General purpose industrial valves—Flanged steel globe valves and lift check valves |
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GB/T1241-1983 |
船用外螺紋鍛鋼截止止回閥 |
Marine forged steel male thread stop and check valves |
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GB/T12233-1989 |
通用閥門鐵制截止閥與升降式止回閥 |
General purpose industrial valves—Casting iron globe valves and lift check valves |
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GB/T12236-1989 |
通用閥門鋼制旋啟式止回閥 |
General purpose industrial valves—Steel swing check valves |
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GB/T13932-1992 |
通用閥門鐵制旋啟式止回閥 |
General purpose industrial valves--Cast iron swing check valves |
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GB/T18691-2002 |
農(nóng)業(yè)灌溉設備止回閥 |
Agricultural irrigation equipment--Check valves |
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GB/T1952-1980 |
船用低壓外螺紋青銅止回閥 |
Low bressure bronze male screw-thread check valve for marine use |
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GB/T597-1983 |
船用外螺紋青銅止回閥 |
Marine bronze male thread lift check valves |
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GB/T592-1993 |
船用法蘭鑄鐵止回閥 |
Marine cast iron flanged lift check valves |
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GB/T591-1993 |
船用法蘭鑄鐵截止止回閥 |
Marine cast iron flanged stop check valves |
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GB/T586-1999 |
船用法蘭鑄鋼止回閥 |
Marine cast steel flanged check valves |
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GB/T588-1993 |
船用法蘭青銅截止止回閥 |
Marine bronze flanged stop check valves |
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GB/T589-1993 |
船用法蘭青銅止回閥 |
Marine bronze flanged check valves |
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GB/T596-1983 |
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標準編號 |
標準中文名稱 |
標準英文名稱 |
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DIN 3269-1-1988 |
地段和建筑物內(nèi)飲水裝置用管件.止回閥PN10.要求 |
(Valves for domestic drinking water installations; check valves PN 10; requirements) |
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DIN 87101-1975 |
垂直型.公稱寬度50-150.公稱壓力1.自閉式止回閥.符合公稱壓力的法蘭連接 |
(Non-return flaps (storm valves), self-closing, vertical type, nominal diameter 50 up to 150, nominal pressure 1; mating dimensions for flanges according to nominal pressure 10) |
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DIN 3441-5-1984 |
非增塑聚氯乙烯管件.壓緊止回閥PN6和PN10.尺寸 |
(Unplasticized polyvinyl chloride (PVC-U) valves; PN 6 and PN 10 wafer type butterfly valves; dimensions) |
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DIN 87104-1975 |
DIN87101止回閥用閥插入件 |
(Flap Inserts for Non-return Flaps in accordance with DIN 87101) |
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DIN 3247-1985 |
無止回閥.帶法蘭的吸濾器 |
(Flanged suction strainers without non-return valve) |
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DIN 87106-1975 |
DIN87101止回閥用定位裝置 |
(Locking Devices for Non-return Flaps in accordance with DIN 87101) |
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DIN 3259-1985 |
帶止回閥的法蘭吸濾器(腳閥) |
(Flanged suction strainers with non-return valve) |
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DIN 477-4-1982 |
氣瓶閥.輕便儲氣瓶頸的止回閥 |
(Compressed gas cylinder valves; swing check valves for camping-cylinders) |
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DIN 3538-1986 |
煤氣裝置管件.止回閥.內(nèi)螺紋接頭 |
(Valves for gas installations; butterfly valves; female threaded ends) |
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DIN 3248-1985 |
無止回閥.帶內(nèi)螺紋連接的吸濾器 |
(Threaded suction strainers without non-return valve) |
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DIN 3249-1985 |
帶止回閥.內(nèi)螺紋連接的吸濾器(腳閥) |
(Threaded suction strainers with non-return valve) |
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DIN EN 1074-3-2000 |
供水用閥門.適用性要求和專用檢查試驗.第3部分:止回閥 |
(Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 3: Check valves; German version EN 1074-3:2000) |
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DIN 74280-1998 |
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